Disk wheel for motor and other road vehicles



Jul 1 1924. I 1,499,809

H. H. DUKE DISK WHEEL FOR MOTOR AND OTHER ROAD VEf-IICLESv Filed Dec. 6 1923 Q Q59 J QVQ INVENTOR Patented July- I, 1924.

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mom) IDiJ'IBIlE, O'I' BOCKIDALE, SYDNEY, NEW SOUTH WS, DIBK WHEEL FOB MOTOR AND OTHER MAD 1' 1 LIA.

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Application filed December 6, 1928. Serial No. 679,085.

To all whom it may concern:

Be it known that HAROLD HILL Duxn, a sub'ect of the King of Great Britain and Ire and, residin at Moseley, Banksia Avenue, Rockda e, S dney, in the State of New South Wales, ommonwealth of Australia, has invented certain new and useful Im rovements in Disk Wheels for Motor and Other Road Vehicles, of which the following is a specification.

Th1s invention relates to solid disk wheels with integral tyres for motor and other road vehicles and refers particularly to improvements in wheels of this type as at present suggested, and the objects of this invention are1st. To strengthen the construction of wheels of this type so that they will withstand the maximum torsional and lateral strains to which they may be subjected and 2nd. To rovide at the same time a more resilient w eel which will absorb road shocks as well as an ordinary wheel fitted with a pneumatic tyre.

The improved disk wheel constructed according to this invention comprises a circular core of finely granulated cork mixed with rubber and the usual vulcanizing ingredients having a number of reinforcing bands of canvas or other suitable reinforcing material such as cord, cord netting, or wire nettin embodied therein near its periphe which is slightly concave in form, these ands extendin across the core and then inwards towards the centre on each side. Round the periphery of the core a canvas binding layer is placed and over this is the tread which is formed of three layers (1) a layer ofmedium hard rubber immediately overlying the canvas binder, (2) a cushion layer composed of comparatively soft and resilient rubber and (3) the tread pro er formed of vulcanized tread rubber in whole a suitable pattern may be formed.

The core is faced on each side with a thin layer of suitable rubber to present a good appearance and the wheel is further strengthened against side thrust by a pair of hub lates bolted one to each side of the whee The invention may be more readily understood by referring to the accompanying drawing which illustrates diagrammatically in section a wheel constructed according to this invention.

The core 2 is formed of fine anulated cork and rubber mixed in suitab e proportions approximately 2 parts cork and 1 part rubber together with the usual well known vulcamzmg ingredients and is faced with a thin layer 3 of rubber. Near the concave e0 of canvas or other suitable material 5 aras ran ed approximately in the manner shown in t e drawin These bands may be extended any deslred distance towards the centre of the wheel.

Outside the canvas binding layer 4 is formed the tread consistin of three la ers 6, 7 and 8, the layer 6 being com ose of rubber or rubber compound and 'vu canizing ingredients of a nature to render it medium hard when cured. The layer 7 is composed of rubber or rubber com ound and vulcanizing ingredients arran e to rovide a relatively soft cushionin ayer w en vulcanized and the layer 8 is ormed of tread rubber and ingredients to form a hard wear resisting tread proper in which a pattern as desired ma be formed.

The w eel is attached to the hub in any well known manner and metal circular plates 9 are bolted to each side of the wheel as y bolts 10 at intervals to give additional strength.

The various ingredients and materials are placed within a mould in their riht order, arrangement and quantity and mass pressed to the required size and rul canized to form a homogeneous whole.

I claim 2- 1. An improved solid disk wheel compris= -ing a circular core composed of finely lated cork and rubber, a plurality o' rein-1 forcin fabric bands within said core a tread integral with said core and rubber side walls encasin said circular core.

2. An improve out in claim 1 characterized in that the tread is formed in three layers (a) a medium hard internal layer, (6) a relatively soft and thick intermediate layer and (a) a hard tread layer, said layers being vulcanized towe forcing strips within the core, said bands extending transversel across and inwardly towards the centre 0 said core.

e whole as itllll- $5 solid disk wheel as set not 6. An improved solid disk wheel as set cut in claim 1 characterized in that the EZlfllk lated cork and rubber are combined in the proportions of two to one and mixed with vulcanizing ingredients.

lln testimony whereof he has efixed his signature in presence of two witnesses.

HAROLD HILL DUKE.

Witnesses:

Ta 0. AWN, N. M. GODDARD lii 

